1
Your target, with the math
Weight, sex, age, activity, climate, and your stone history turn into a daily goal — inside the clinically recommended range, with every line item and its source shown.
Built for stone formers
Drink like your kidneys depend on it.
Your clinician said “more water.” Stoneless turns that into a plan: a personalized daily target, reminders that follow your pace through the day, and hydration that shows up in Health Connect.
Not a medical device · No account · Your data stays on your phone
2.5–3.0 Ldaily fluid range recommended for stone formers (EAU 2026)
56.5%measured hydration adherence among stone formers (Wei et al., 2026)
1 in 11US adults affected by kidney stones (NIDDK)
The guideline is clear. The hard part is living it — that is the part Stoneless is built for.
A coach, not a counter
2
Log in one tap
Log a glass straight from the reminder notification. Track water, tea, coffee, sparkling — your way, in ml or oz.
3
Pacing that adapts
Reminders recompute after every drink: how much, by when, with a two-hour wind-down before bed so you are not up all night.
Health Connect
Your hydration, where you already look
Stoneless writes each logged drink to Health Connect, so your hydration can appear in Google Health alongside the rest of your day. Write-only by design: Stoneless never reads your other health data, and nothing is ever sent to us.
- One-time permission, clearly explained
- Works on Android 9+ (Health Connect app required)
- Delete your data anytime — in the app and in Health Connect
Simple pricing
Free is genuinely useful. Pro is for when you want the pacing to do the thinking.
Free
$0
Always useful, never nagging
- Personalized daily target with the math shown
- One-tap logging, water and other drinks
- Three daily reminders, spread across your day
- Health Connect sync to Google Health
- 7-day history
Recommended
Pro
$29.99/year
7-day free trial · $4.99 monthly · $79.99 lifetime
- Adaptive pacing — reminders recomputed after every drink
- Evening cutoff so you are not up all night
- 30-day trends and full history
- Urologist-ready PDF report
- Work mode and custom reminder caps
Billing runs through Google Play. Cancel anytime in Play → Subscriptions.
Questions
Is Stoneless medical advice?
No. Stoneless is not a medical device and does not diagnose, treat, cure, or prevent any medical condition. It helps you follow the hydration plan you and your clinician agree on, and it shows you exactly where its numbers come from.
Where does my data live?
Your logs stay on your phone. There is no account and no cloud copy. If you connect Health Connect, Stoneless only writes your hydration entries so they can appear in Google Health — it never reads your other health data.
How is my daily target calculated?
From your body (weight, sex, age band), your day (activity level, climate), and your clinical context. For stone formers, Stoneless targets the 2.5–3.0 L/day fluid range recommended by the EAU 2026 and AUA guidelines — and shows every line of the math, with sources.
What is free, and what is Pro?
Free covers the essentials: your target, one-tap logging, three daily reminders, Health Connect sync, and 7-day history. Pro ($29.99/year with a 7-day trial) adds adaptive pacing that recomputes after every drink, 30-day trends, and a urologist-ready PDF report.
Does it work offline?
Yes. Everything — logging, reminders, insights — works without a connection. Health Connect sync happens on-device.
Which phones are supported?
Android 9 and newer. Health Connect sync requires the Health Connect app (built into Android 14+), and your hydration appears in Google Health when you grant it permission there.
Be first on Google Play
Stoneless for Android is in development. Say hello and we will send you the link the day it ships.
hello@stoneless.app